From the author's site:
...handles any USB mouse, trackball, joystick and gamepad from any manufacturer and lets you configure them either globally or on a per-application basis. It reads all kinds of wheels, buttons, switches and controls and supports scrolling, keyboard emulation, launching and all the usual stuff like clicking, control-clicking and so forth.Very much worth checking out if you like multi-functioning mice and OS X.
[Editor's note: We don't normally run general product announcements, but this release of USB Overdrive is worth a mention as it really is a hint - it's how you can get any USB input device to work with your Mac! This includes gamepads, mice, and joysticks that have zero Mac support, enabling you to potentially save a lot of money by purchasing a generic device instead of a Mac-specific device...]

